ULF waves
GEOTAIL observation of upstream ULF waves associated with lunar wake
... the ULF waves as- sociated with the lunar ...the ULF waves were detected in short, lim- ited periods of 15, 10 or 5 minutes described ...above. ULF waves were often absent even ...
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Statistical study of ULF waves in the magnetotail by THEMIS observations
... magnetic field components in GSM ∗ coordinates. We find that 61.70 % of the events have an elevation angle larger than 45 ◦ , and only 2.48 % events have an elevation angle less than 10 ◦ . This suggests that most of our ...
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The frequency variation of Pc5 ULF waves during a magnetic storm
... Pc5 waves decreases with increasing ...Pc5 ULF waves increases with increasing lat- ...Pc5 ULF waves whose fre- quency is near 2 mHz locates in different ...
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The use of the Poynting vector in interpreting ULF waves in magnetospheric waveguides
... The event outlined in Clausen08 was selected for modeling mainly due to the Poynting vector signature showing purely tailward propagation of energy. The second event described by Hartinger12 was chosen as a contrast to ...
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Interactions of energetic electrons with ULF waves triggered by interplanetary shock: Van Allen Probes observations in the magnetotail
... In this manuscript, we have presented a case study on 13 April 2013 by using Van Allen Probes observa- tions. Our observations show that when the IP shock arrives, the response of the plasma and energetic particle ...
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Dayside magnetopause Pc 3 and Pc 5 ULF waves observed by the GEOTAIL Satellite
... the satellite is illustrated in Fig. 1 in a X-Y plane of GSE coodinates with three different dotted curves. The perigee of the satellite was about 8 Earth radii (Re) around noon and the apogee was − 48 Re in the midnight ...
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The propagation of ULF waves from the Earth's foreshock region to ground: the case study of 15 February 2009
... the ULF waves were observed from polar to low-latitude ...to waves propagating radially from the generation region (as shown in Figure 3) and directly transmitted through the subsolar bow shock and ...
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ULF waves in the outer magnetosphere: Geotail observation 1 transverse waves
... magnetic waves in the magnetosphere more than 40 years ago (Nagata et ...surface waves, excited by the Kelvin-Helmholtz instability (KHI) on the magne- topause, could drive standing Alfv´en waves on ...
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Evolution and characteristics of global pc5 ULF waves during a high solar wind speed interval
... recovery phase of a large geomagnetic storm. These pulsations occurred continuously for many hours and were observed throughout the magnetosphere and in the dusk-sector ionosphere. The subject of this paper is the ...
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Preseismic ULF electromagnetic effect from observation at Kamchatka
... that ULF signal at Z component is more exposed to man-made interferences than response in horizontal compo- ...associated ULF variations could be either due to direct radia- tion from EQ origin zone ...
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ULF magnetic emissions connected with under sea bottom earthquakes
... of ULF waves propagating along the Earth’s surface and their magnetic gradients by using the special magne- tometer array (three, 3-component magnetic stations situated at the top of the triangle and spaced ...
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Electromagnetic Precursors to the 2016 Kumamoto Earthquakes
... of ULF waves observed at KNY has been investi- gated to investigate the ULF depression [8] ...the ULF depression have already been presented in the bottom panel of Figure 1, but they are ...
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Using ultra-low frequency waves and their characteristics to diagnose key physics of substorm onset
... time ULF wave amplitudes rise above a noise threshold, which we define as the onset of ULF waves, during magnetic substorms (see Murphy et ...significant ULF wave variations) and the power in ...
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Magnetohydrodynamic waveguide/resonator for Pc3 ULF pulsations at cusp latitudes
... of ULF wave activity over a wide fre- quency range (Olson, 1986; Glassmeier, ...cusp-associated ULF waves and hourly averages of the IMF magnitude was noted by Wolfe et ...for ULF waves ...
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Energization of relativistic electrons in the presence of ULF power and mev microbursts: Evidence for dual ULF and VLF acceleration
... ULF waves, some test needs to be done to determine whether either phenomenon alone or both in concert can be tied exclusively to electron ...of ULF power and the frequency of microbursts and compare ...
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Past, Present and Future of Active Radio Frequency Experiments in Space
... the waves, ULF waves from 1 second to hundreds of seconds period can also be produced by electron density changes in the upper D and E ...period ULF waves have been much more difficult ...
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Deciphering satellite observations of compressional ULF waveguide modes
... (ULF) waves have provided the foundation for a theoretical understanding of the dynam- ics of the magnetosphere since they were first discussed by Dungey [1954, ...these waves considered the concept ...
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An Integrated Study of ULF Magnetic Field Variations in Association with the 2008 Sichuan Earthquake, on the Basis of Statistical and Critical Analyses
... the ULF magnetic field data, we can study two different aspects of ULF ...lithospheric ULF radiation from the EQ hypocenter. Lithospheric ULF radiation has been observed prior to large EQs, ...
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Plasma heating and kinetic instabilities in the terrestrial foreshock
... associated ULF waves typically (50-100)kms −1 ...Alfvén waves, or the modula- tion instability of the fast magnetosonic mode, may also be present and redistribute power on separate channels ...
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Magnetic storm free ULF analysis in relation with earthquakes in Taiwan
... Timings and/or locations of forthcoming earthquakes can be effectively estimated by using FFT (Fraser-Smith et al., 1990), the fractal method (Hayakawa et al., 1999), the flicker noise spectroscopy (Hayakawa and ...
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